vivek,
I am not a developer and do not know if there is an option to deactivate the error message no. and error message popping up when you click on the message at the bottom of the screen. Probably while working on this issue, you should get the popup also fixed, so that later on SD analysts can go to the developer with the error message no. directly.
How do users know that payment is made for a particular billing document?
What is the reason for cancelling this billing document? you can ask the user / business for more information.
TW